Multidimensional pain assessment of preterm newborns at the 1st, 3rd and 7th days of life.

Context And Objective: It is challenge to assess and treat pain in premature infants. The objective of this study was to compare the multidimensional pain assessment of preterm neonates subjected to an acute pain stimulus at 24 hours, 72 hours and seven days of life.

Design And Setting: Prospective cohort study, at Universidade Federal de São Paulo.